GlennWest Posted July 8, 2023 Report Share Posted July 8, 2023 When I wash roof panels will get wet. Is their any chance of them cracking from being hot and water hitting them? Quote 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
durangodon Posted July 8, 2023 Report Share Posted July 8, 2023 7 hours ago, GlennWest said: When I wash roof panels will get wet. Is their any chance of them cracking from being hot and water hitting them? Do they crack when a summer rain comes up? Quote Link to comment Share on other sites More sharing options...
oldjohnt Posted July 8, 2023 Report Share Posted July 8, 2023 11 hours ago, GlennWest said: When I wash roof panels will get wet. Is their any chance of them cracking from being hot and water hitting them? Yes, there's probably SOME chance, they can get pretty hot in bright sunlight, never say never, thermal expansion and contraction versus Delta T exists, but I can ONLY say I've never read warnings about what you asked...I worry more about HAIL, rocks walnuts or other falling objects.. Maybe some solar panel or materials expert (thats NOT me) has the answer or someone may google it, its above my pay grade lol John T Quote Link to comment Share on other sites More sharing options...
GlennWest Posted July 8, 2023 Author Report Share Posted July 8, 2023 I have never read anything about this. DW brought this up yesterday when I decided to wash it. I said what about a thunderstorm? Well it is cloudy them. So I'm asking Quote 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
Ray,IN Posted July 9, 2023 Report Share Posted July 9, 2023 I would expect about the same results as washing a car and windows in hot weather and bright sun. If you're concerned, spray a light mist on the roof first, the evaporation should cool them some. That's what I do when washing vehicles in the sun. Quote 2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG retired;Good Sam Life member,FMCA ." And so, my fellow Americans: ask not what your country can do for you--ask what you can do for your country. John F. Kennedy 20 Jan 1961 Link to comment Share on other sites More sharing options...
2gypsies Posted July 9, 2023 Report Share Posted July 9, 2023 I just Googled and there are many articles. Here is one excerpt: "Pick a cool, cloudy day to wash solar panels, just as you would for washing windows. When it's hot, water evaporates too quickly and leaves residue. Solar panels don't like sudden changes in temperatures and by applying cold water to them on a hot day, you risk cracking them." Quote Full-timed for 16 YearsTraveled 8 yr in a 2004 Newmar Dutch Star 40' Motorhome and 8 yr in a 33' Travel Supreme 5th Wheel Link to comment Share on other sites More sharing options...
Chad Heiser Posted July 9, 2023 Report Share Posted July 9, 2023 Whenever I wash the panels, I try to do it first thing in the morning or late in the day (either before the panels heat up or after they have cooled down some). I don’t do it because I am concerned about them cracking though. I do it because when they are hot, whatever I am spraying on them to clean them evaporates too quickly and leaves streaks. Quote 2000 Kenworth T2000 w/ Cummins N14 and autoshift 2017 DRV Mobile Suite 40KSSB4 with factory mods, dealer mods and personal mods - now in the RV graveyard 2022 DRV Full House MX450 with customized floor plan 2018 Polaris RZR Turbo S (fits in the garage) 2016 Smart Car (fits in the garage or gets flat towed behind the DRV when the RZR is in the garage)My First Solar Install ThreadMy Second Solar Install Thread & Photos and Documents Related to the buildMy MX450's solar, battery and inverter system - my biggest system yet! chadheiser.com West Coast HDT Rally Website Link to comment Share on other sites More sharing options...
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